DEFY Service                                                                              

1.Professional technical support pre-sale, sale and after-sale .
2.Your problems can get feedback in 8 hours and be solved in 24 hours.
3.Machine can be customized as per your requirement.
4.One year quality warranty.
5.Training: operation manual and DVD operation video, overseas installation is also available.
6.Spare parts are available in our factory at cost price for former customers.

Q1: Are you trading company or manufacturer?
A1: We are original equipment manufacturer.we design,produce and sell.We master the core
      technology, and constantly adjust our products according to the market trend and customer
      feedback, ensure product quality.

Q2: How long is your delivery time?
A2: It is according to the model and quantity.
      Generally it is 3-5 days if the machines are in stock. 
      It will be 15-30 days if you want to customize the machines.

Q3: What do I need to do after payment?
A3: a) If under FOB trading terms,you need to employ a ship forwarder to ship the goods to you;
      b) Under CIF trading terms,we send the goods to the destination port,and contact you to pick
           up the goods; All documents for customs clearance will be sent to you by international 
           express after shipment.

How to choose a suitable drilling rig?                                      

1. What will you do using drilling rig? 
---For water project, core sample, soil test, mineral prospect or others?

2. The depth you need?
---For water well, generally, 30-200m. For core sample, 30-600m, even more. 

3. Any requirements to hole diameter?

---Within a certain range, the smaller diameter, the deeper depth. Mathematically, we call it
inversely proportional.

4. Working land condition?
A. soil, sand, weathered land, etc. soft stratum.
B. soil, sand, soft and hard rock stratum, mixed one. 
C. Mainly hard rock, like granite.

Based on the above information, Our experienced engineers will help you recommend suitable
machine and price. If you have special demands, please tell us ahead. 



About Us                                                                                     

    Zhengzhou Defy Mechanical & Electrical Equipment Co.,Ltd. locates in High-tech zone of
Zhengzhou city, China.

    Our factory dedicates in manufacturing drilling rig since 1970s, more than 40 years' experience
of production and development makes our product quality rank in the leading position at home and
abroad. 

    We are always seeking for ever greater perfection, keeping improving the production technology,
offering better user experience.